Clinical evaluation of a new measles-mumps-rubella combined live virus vaccine in the Dominican Republic

Abstract

Over 900 children were enrolled in a double-blind placebo-controlled clinical study of measles (Schwarz strain), mumps (Jeryl Lynn strain), and rubella (Cendehill strain) trivalent vaccine. The trivalent vaccine caused about the same degree of reactivity as is generally associated with the Schwarz strain measles vaccine. Paired sera from triplesusceptible vaccinees had seroconversion rates of 99% for measles, 94% for mumps, and 93% for rubella. The results of this study show that this trivalent vaccine is as well tolerated and as effective as its component vaccines.